Patents by Inventor Cynthia J. Campbell

Cynthia J. Campbell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for aiding in learning correct penmanship
    Patent number: 4846710
    Abstract: Apparatus for attachment to a pen or pencil to aid a student of penmanship and to assist that student in leaning the proper position of the student's fingers on an associated pen or pencil which includes a sleeve dimensioned and configured for engaging the forefinger and apparatus for securing the sleeve to the associated pen or pencil.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: July 11, 1989
    Inventor: Cynthia J. Campbell